CN111734369B - Petroleum layering oil production device - Google Patents
Petroleum layering oil production device Download PDFInfo
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- CN111734369B CN111734369B CN202010692106.8A CN202010692106A CN111734369B CN 111734369 B CN111734369 B CN 111734369B CN 202010692106 A CN202010692106 A CN 202010692106A CN 111734369 B CN111734369 B CN 111734369B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000003208 petroleum Substances 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 270
- 238000002347 injection Methods 0.000 claims abstract description 45
- 239000007924 injection Substances 0.000 claims abstract description 45
- 239000003129 oil well Substances 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 9
- 238000005065 mining Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 15
- 238000007667 floating Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 8
- 238000011010 flushing procedure Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to a petroleum layered oil production device. The technical scheme is as follows: form feed liquor chamber (A) between efflux suction pipe column and the upper oil reservoir II suction pipe column, form the second between the bottom of upper oil reservoir II suction pipe column and the lower floor's oil reservoir I suction pipe column and return liquid chamber (B), the inner chamber of lower floor's oil reservoir I suction pipe column is first returns liquid chamber (C), and beneficial effect is: the invention realizes the direct control of the produced liquid of a plurality of oil layers for the layered oil production, so that the obtained data is more real and reliable; the induced liquid adopts the original well liquid, so that not only are resources and cost saved, but also the extracted liquid components are ensured to have no invasion interference of foreign substances, and the method is more accurate and real; thirdly, the combination of injection and well washing saves space, increases the number of layers to be produced, and ensures that the service cycle of the oil well is longer; and fourthly, the layered mining eliminates the interlayer interference, and avoids the problems that only mixed mining is available originally, flooding is easy to occur, oil cannot be produced due to the water produced by the oil reservoir, and normal mining cannot be carried out.
Description
Technical Field
The invention relates to an oil exploitation device and method, in particular to an oil layering exploitation device.
Background
In the process of oil exploitation, because the stratum structure is more complicated, a negative pressure jetting and sucking technology, namely a jet flow oil extraction technology, is often adopted, and the negative pressure jetting and sucking technology depends on working fluid with certain pressure to be jetted and taken away by a nozzle at high speed, and just because the jet flow oil extraction technology needs to establish liquid circulation, and liquid flow or air flow channels are more complicated, so that the negative pressure jetting and sucking technology is mainly applied to single-layer oil extraction at present, and we know that: the layered oil extraction is a fine management mode, particularly under the conditions of poor petroleum resources, complex geological conditions and high extraction difficulty in our country, if the jet layered oil extraction mode can be realized, in an area suitable for jet extraction, the interference among oil layers can be overcome, the oil extraction efficiency is improved, the cost is saved, and the benefit is increased.
Disclosure of Invention
The invention aims to provide a petroleum layered oil production device, namely a jet layered oil production technology, aiming at the defects in the prior art, a relatively independent circulating system is established, a ground control mode is adopted, namely each oil production layer is provided with an independent oil production circulating system, jet layered oil production is realized in an independent liquid supply mode, and the oil production layers are not interfered with each other.
The invention provides a petroleum layered oil extraction device, which adopts the technical scheme that: comprises an oil well casing (1), a liquid inlet check valve (2), a bottom layer butt joint device (3), a first washable well packer (4), a jet flow suction pipe column (5), an upper layer oil deposit II suction pipe column (6), a lower layer oil deposit I suction pipe column (7), a K344 interval packer (8), a divided liquid inlet flow passing device (9), a second washable well packer (10), a high-pressure injection pump (18), an injection liquid supply pipeline (19), a high-pressure pump liquid supply tank (21), a lower layer liquid inlet opening valve (22), a pipe column blocking end cover (23), a liquid inlet cavity (A), a second liquid return cavity (B), a first liquid return cavity (C), an upper layer negative pressure jet hole (6.1) and a lower layer negative pressure jet hole (7.1),
installing a jet flow suction pipe column (5) in an oil well casing (1), and installing a first washable well packer (4), a second washable well packer (10) and a K344 interval packer (8) on the jet flow suction pipe column (5) so as to separate two oil reservoirs; an upper oil deposit II suction pipe column (6) is arranged in an inner cavity of a jet flow suction pipe column (5), a lower oil deposit I suction pipe column (7) is arranged in the inner cavity of the upper oil deposit II suction pipe column (6), an upper negative pressure jet hole (6.1) and a split-flow liquid flow-through device (9) are arranged between the jet flow suction pipe column (5) and the upper oil deposit II suction pipe column (6) and positioned at the upper oil deposit II, a pipe column blocking end cover (23) is arranged between the bottom of the upper oil deposit II suction pipe column (6) and the lower oil deposit I suction pipe column (7), a liquid inlet check valve (2) is connected to the lower side of the lower oil deposit I suction pipe column (7), a lower negative pressure jet hole (7.1) is arranged between the liquid inlet check valve (2) and the lower oil deposit I suction pipe column (7), a lower liquid inlet opening valve (22) is arranged in the liquid inlet check valve (2), and a bottom butt joint device (3) is arranged at the bottom of the jet flow suction pipe column (5); a liquid inlet cavity (A) is formed between the jet flow suction pipe column (5) and the upper oil deposit II suction pipe column (6), a second liquid return cavity (B) is formed between the bottom of the upper oil deposit II suction pipe column (6) and the lower oil deposit I suction pipe column (7), and the inner cavity of the lower oil deposit I suction pipe column (7) is a first liquid return cavity (C);
the bottom layer butt joint device (3) and the pipe column blocking end cover (23) enable the bottom of the liquid inlet cavity (A) to be communicated with the first liquid return cavity (C) through the lower layer negative pressure jet hole (7.1); the liquid inlet cavity (A) is communicated with the second liquid return cavity (B) through an upper-layer negative pressure jet hole (6.1);
the top of the liquid inlet cavity (A) is connected to a high-pressure injection pump (18) through a valve d and is communicated to a high-pressure pump liquid supply tank (21) through an injection liquid supply pipeline (19); the upper end of the second liquid return cavity (B) is communicated to the bottom of the high-pressure pump liquid supply tank (21) and an external pipeline through a valve and a pipeline, and the top of the first liquid return cavity (C) is communicated to the high-pressure pump liquid supply tank (21) and the external pipeline through the valve and the pipeline.
Preferably, the top of the oil well casing (1) is connected to a large four-way joint (12) through a casing flange plate (11), a hanger (13) is installed on the inner side of the upper portion of the large four-way joint (12), a jet flow four-way joint (14) is installed on the top of the large four-way joint (12), a suction four-way joint (15) is installed on the upper portion of the jet flow four-way joint (14), and a bottom layer liquid outlet joint (16) is installed on the top of the suction four-way joint (15).
Preferably, a well-flushing liquid inlet hole d is formed in the outer side of the large four-way joint (12), a hanger (13) on the inner side of the upper portion of the large four-way joint (12) is used for being fixedly connected with the top end of the jet flow suction pipe column (5), and the well-flushing liquid inlet hole d is connected to the high-pressure injection pump (18) and the high-pressure pump liquid supply tank (21) in parallel through an injection pipeline (17).
Preferably, the bottom of the jet flow cross joint (14) is fixedly connected to the top of the large cross joint (12), a liquid inlet hole is formed in the outer wall of the jet flow cross joint (14), and the jet flow cross joint is connected to a high-pressure injection pump (18) and a high-pressure pump liquid supply tank (21) through a valve d and an injection pipeline; the top of the jet flow cross joint (14) is fixed at the top of the upper oil reservoir II suction pipe column (6).
Preferably, the bottom of the suction four-way joint (15) is fixed on the top of the jet flow four-way joint (14), the top of the suction four-way joint (15) is provided with a bottom liquid outlet joint (16), the outer wall of the suction four-way joint (15) is provided with a liquid outlet, and the suction four-way joint is connected to a high-pressure pump liquid supply tank (21) through a valve e and a valve f.
Preferably, the center of the bottom liquid outlet joint (16) is provided with a liquid outlet, and the bottom liquid outlet joint is connected to a high-pressure pump liquid supply tank (21) through a valve k, a pipeline and a valve h, and is connected to an external discharge pipeline through a valve j.
Preferably, foretell reposition of redundant personnel feed liquor current filter (9) include body (9.1), check valve (9.2), cross liquid hole (9.3), centre bore (9.4), body (9.1) be the ring structure, the center of body (9.1) is equipped with centre bore (9.4), be equipped with a plurality of check valves (9.2) in body (9.1), outside-in's one-way flow can be realized to liquid, be equipped with a plurality of about link up cross liquid hole (9.3) on body (9.1), reposition of redundant personnel feed liquor current filter (9) set up in upper oil reservoir II department, and install in the annular space between jet suction tubular column (5) and upper oil reservoir II suction tubular column (6) of K344 interval packer (8) upside.
Preferably, a valve above the second return liquid cavity (B) is opened, the liquid inlet cavity (A) enters the second return liquid cavity (B) through an upper-layer negative pressure jet hole (6.1) to form negative pressure, the flow dividing liquid inlet overflowing device (9) is driven to be opened, oil of the upper-layer oil reservoir II is taken out, and the oil is lifted to a well head along the second return liquid cavity (B).
Preferably, the lower layer liquid inlet opening valve (22) can adopt a steel ball.
Preferably, foretell lower floor's feed liquor opens valve (22) includes floating valve (22.1), valve body (22.2), rubber (22.3), locating pin (22.4), return spring (22.5), crosses liquid passageway (22.6) and feed area (22.7), the downside inner chamber of valve body (22.2) is equipped with the feed area (22.7) of toper structure, and the middle part of feed area (22.7) is equipped with locating pin (22.4) and return spring (22.5), is equipped with a plurality of liquid passageways (22.6) of crossing in the outside of feed area (22.7), crosses the bottom of liquid passageway (22.6) and feeds through with the cavity in feed area (22.7), and the top is passed through rubber (22.3) and is connected with floating valve (22.1), floating valve (22.1) are the toper structure, and the bottom is connected at locating pin (22.4) through return spring (22.5).
The invention has the beneficial effects that: the invention realizes the direct control of the produced liquid of a plurality of oil layers for the layered oil production, so that the obtained data is more real and reliable; secondly, the induced liquid adopts the original well liquid, so that not only are resources and expenses saved, but also the extracted liquid components are ensured to have no invasion interference of foreign substances, and the method is more accurate and real; thirdly, the combination of injection and well washing saves space, increases the number of layers to be produced, and ensures that the service cycle of the oil well is longer; fourthly, the layered mining eliminates the interlayer interference, and avoids the problems that only mixed mining can be carried out originally, flooding is easy to occur, oil cannot be produced due to oil reservoir water production, and normal mining cannot be carried out; fifthly, the high-pressure injection pump is installed on the ground, so that the overhaul is more convenient, and the ground grid connection (namely, manifold) becomes very convenient because a plurality of independent mining channels are formed by adopting concentric pipe columns.
Drawings
FIG. 1 is a schematic representation of the construction of the downhole portion of the present invention;
FIG. 2 is a schematic structural view of an uphole control section of the invention;
FIG. 3 is a schematic cross-sectional view of a split feed flow through apparatus;
FIG. 4 is a schematic structural view of a power jet adapter;
FIG. 5 is a schematic structural diagram of a lower liquid inlet opening valve;
in the upper diagram: the device comprises an oil well casing 1, a liquid inlet check valve 2, a bottom layer butting device 3, a first washable well packer 4, a jet flow suction pipe column 5, an upper layer oil deposit II suction pipe column 6, a lower layer oil deposit I suction pipe column 7, a K344 interval packer 8, a split liquid inlet flow passing device 9, a second washable well packer 10, a casing flange 11, a large four-way 12, a hanger 13, a jet flow four-way 14, a suction four-way 15, a bottom layer liquid outlet joint 16, an injection pipeline 17, a high-pressure injection pump 18, an injection liquid supply pipeline 19, a control valve 20, a high-pressure pump liquid supply tank 21, a lower layer liquid inlet opening valve 22, a pipe column blocking end cover 23, a liquid inlet cavity A, a second liquid return cavity B, a first liquid return cavity C, an upper layer negative pressure jet hole 6.1, a lower layer negative pressure jet hole 7.1, a floating valve 22.1, a valve body 22.2, rubber 22.3, a positioning pin 22.4, a return spring 22.5, a liquid passing channel 22.6 and a liquid supply area 22.7, an upper joint 24.1, an injection hole 24.2, a diffusion joint 24.3 and a lower joint 24.4.4.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 1-2, the invention provides a petroleum layered oil production device, namely a jet type layered oil production device, which comprises an oil well casing 1, a liquid inlet check valve 2, a bottom layer butt joint device 3, a first washable well packer 4, a jet flow suction pipe column 5, an upper layer oil deposit II suction pipe column 6, a lower layer oil deposit I suction pipe column 7, a K344 interval packer 8, a split flow liquid flowing device 9, a second washable well packer 10, a high pressure injection pump 18, an injection liquid supply pipe line 19, a high pressure pump liquid supply tank 21, a lower layer liquid inlet opening valve 22, a pipe column blocking end cover 23, a liquid inlet cavity A, a second liquid return cavity B, a first liquid return cavity C, an upper layer negative pressure jet hole 6.1 and a lower layer negative pressure jet hole 7.1,
installing a jet flow suction pipe column 5 in the oil well casing 1, and installing a first washable well packer 4, a second washable well packer 10 and a K344 interval packer 8 on the jet flow suction pipe column 5 so that two oil reservoirs are separated; an upper oil deposit II suction pipe column 6 is arranged in an inner cavity of a jet suction pipe column 5, a lower oil deposit I suction pipe column 7 is arranged in an inner cavity of the upper oil deposit II suction pipe column 6, an upper negative pressure jet hole 6.1 and a split liquid inlet overflowing device 9 are arranged between the jet suction pipe column 5 and the upper oil deposit II suction pipe column 6 and positioned at the upper oil deposit II, a pipe column blocking end cover 23 is arranged between the bottom of the upper oil deposit II suction pipe column 6 and the lower oil deposit I suction pipe column 7, a liquid inlet check valve 2 is connected to the lower side of the lower oil deposit I suction pipe column 7, a lower negative pressure jet hole 7.1 is arranged between the liquid inlet check valve 2 and the lower oil deposit I suction pipe column 7, a lower liquid inlet opening valve 22 is arranged in the liquid inlet check valve 2, and a bottom butt joint device 3 is arranged at the bottom of the jet suction pipe column 5; a liquid inlet cavity A is formed between the jet flow suction pipe column 5 and the upper layer oil deposit II suction pipe column 6, a second liquid return cavity B is formed between the bottom of the upper layer oil deposit II suction pipe column 6 and the lower layer oil deposit I suction pipe column 7, and the inner cavity of the lower layer oil deposit I suction pipe column 7 is a first liquid return cavity C;
the bottom layer butting connector 3 and the tubular column blocking end cover 23 connect the bottom of the liquid inlet cavity A to the first liquid return cavity C through the lower layer negative pressure jet hole 7.1; the liquid inlet cavity A is communicated with the second liquid return cavity B through an upper-layer negative pressure jet hole 6.1;
the top of the liquid inlet cavity A is connected to a high-pressure injection pump 18 through a valve d and is communicated to a high-pressure pump liquid supply tank 21 through an injection liquid supply pipeline 19; the upper end of the second return cavity B is communicated to the bottom of the high-pressure pump liquid supply tank 21 and an external pipeline through a valve and a pipeline, and the top of the first return cavity C is communicated to the high-pressure pump liquid supply tank 21 and the external pipeline through a valve and a pipeline.
Referring to fig. 2, the top of an oil well casing 1 of the invention is connected to a large cross 12 through a casing flange 11, the inner side of the upper part of the large cross 12 is provided with a hanger 13, the top of the large cross 12 is provided with a jet cross 14, the upper part of the jet cross 14 is provided with a suction cross 15, and the top of the suction cross 15 is provided with a bottom layer liquid outlet joint 16.
Referring to fig. 2, a well-flushing liquid inlet hole d is formed in the outer side of the large four-way 12, a hanger 13 on the inner side of the upper portion of the large four-way 12 is used for fixedly connecting the top end of the jet flow suction pipe column 5, and the well-flushing liquid inlet hole d is connected to a high-pressure injection pump 18 and a high-pressure pump liquid supply tank 21 in parallel through an injection pipeline 17.
Referring to fig. 2, the bottom of the jet four-way joint 14 is fixedly connected to the top of the large four-way joint 12, a liquid inlet hole is formed in the outer wall of the jet four-way joint 14, and the jet four-way joint is connected to a high-pressure injection pump 18 and a high-pressure pump liquid supply tank 21 through a valve d and an injection pipeline; the top of the jet flow cross-joint 14 is fixed on the top of the upper oil deposit II suction pipe column 6.
Referring to fig. 2, the bottom of the suction four-way joint 15 is fixed on the top of the jet four-way joint 14, the top of the suction four-way joint 15 is provided with a bottom liquid outlet joint 16, and the outer wall of the suction four-way joint 15 is provided with a liquid outlet and is connected to a high-pressure pump liquid supply tank 21 through a valve e and a valve f.
Referring to fig. 2, the bottom liquid outlet joint 16 is provided with a liquid outlet at the center, and is connected to the high pressure pump liquid supply tank 21 through a valve k, a pipeline and a valve h, and is connected to the external discharge pipeline through a valve j.
Referring to fig. 3, the split liquid inlet overflowing device 9 of the invention comprises a body 9.1, a one-way valve 9.2, a liquid passing hole 9.3 and a central hole 9.4, wherein the body 9.1 is of a circular structure, the central hole 9.4 is arranged at the center of the body 9.1, a plurality of one-way valves 9.2 are arranged in the body 9.1, liquid can flow in one direction from outside to inside, a plurality of liquid passing holes 9.3 which are vertically communicated are arranged on the body 9.1, the split liquid inlet overflowing device 9 is arranged at an upper layer II and is arranged in an annular space between a jet flow suction pipe column 5 at the upper side of a K344 interval packer 8 and an upper layer II suction pipe column 6 and is sealed by a rubber ring, in addition, through holes are respectively arranged on the jet flow suction pipe column 5 and the upper layer II suction pipe column 6 and are correspondingly arranged with the one-way valves 9.2, so that oil and water in the upper layer II reservoir sequentially pass through the jet flow suction pipe column 5, the one-way valve 9.2 of the split liquid inlet overflowing device 9, the upper layer II suction pipe column 6 and enter a second reservoir liquid return cavity B; and a plurality of through holes 9.3 that link up from top to bottom that are equipped with on body 9.1 are for realizing that the induced drawing liquid of feed liquor chamber A passes along through liquid hole 9.3, are used for when the exploitation of lower floor's oil deposit I, induced drawing liquid sprays downwards along feed liquor chamber A to spout to first liquid return chamber C from lower floor's negative pressure jet hole 7.1, realize the exploitation of lower floor's oil deposit I.
Preferably, a valve above the second return cavity B is opened, the liquid inlet cavity A enters the second return cavity B through the upper negative pressure jet hole 6.1 to form negative pressure, the flow dividing liquid inlet overflowing device 9 is driven to be opened, oil of the upper oil reservoir II is taken out, and the oil is lifted to a well head along the second return cavity B.
Referring to fig. 1, the lower liquid inlet opening valve 22 of the present invention may be a steel ball, when the lower oil reservoir I is mined, the induced liquid is injected to the first liquid return chamber C through the lower negative pressure jet hole 7.1 downward along the liquid inlet chamber a, the formed negative pressure opens the steel ball, and drives the oil and water liquid of the oil reservoir I along and again along the first liquid return chamber C.
In addition, it should be noted that: upper negative pressure jet orifice 6.1 and lower floor's negative pressure jet orifice 7.1 adopt by the outside to the aperture of inboard slope, have realized the function of spraying under the high-pressure effect, form powerful negative pressure at the inner chamber, lure the drawing liquid as power liquid, under powerful negative pressure effect, the aqueous oil liquid in the oil deposit opens reposition of redundant personnel feed liquor and crosses a class 9 to mix with luring the drawing liquid, and is taken ground to realize jet oil recovery.
Still, first washable well packer 4, second washable well packer 10 adopt Y341 washable well packer, K344 interval packer 8 then can realize packing when luring the drawing liquid to suppress, lure the drawing liquid to lead to liquid from top to bottom when not suppressing, two current washable well packers cooperation K344 interval packer 8 like this, make the flushing fluid can get into in the pit along the annular space entering of sleeve pipe and efflux suction tubular column 5 through first washable well packer 4, second washable well packer 10 and K344 interval packer 8, realize the well-flushing function.
The invention relates to a construction method of a petroleum layered oil extraction device, in particular to a construction method of a jet type layered oil extraction device, which comprises the following steps of underground pipe column construction and ground control part construction, wherein the underground pipe column construction comprises the following steps:
1. after a liquid inlet check valve 2, a bottom layer butting device 3, a first washable well packer 4, a jet flow suction pipe column 5, a K344 interval packer 8, a split liquid inlet overflowing device 9 and a second washable well packer 10 are lowered into a designed position in an oil well casing 1, the top of the jet flow suction pipe column 5 is connected with a hanger 13, the hanger 13 is fixed on a large four-way joint 12, the fixation of the jet flow suction pipe column 5 is completed firstly, and the bottom of the jet flow suction pipe column 5 is connected with the bottom layer butting device 3;
2. after the jet flow suction pipe column 5 is fixed, the upper layer oil deposit II suction pipe column 6 is put into the underground along the inner cavity of the jet flow suction pipe column 5, the top of the upper layer oil deposit II suction pipe column 6 is connected to the jet flow cross 14, the jet flow cross 14 is arranged on the upper sides of the large cross 12 and the hanger 13, after the jet flow cross 14 is arranged on the large cross 12 and the hanger 13, the large cross 12 is connected with the jet flow cross 14 through a connecting bolt, and the bottom of the upper layer oil deposit II suction pipe column 6 is connected with a pipe column blocking end cover 23, so that an inlet liquid cavity A is formed between the jet flow suction pipe column 5 and the upper layer oil deposit II suction pipe column 6;
3. a lower layer oil deposit I suction pipe column 7 is put into the underground along the inner cavity of an upper layer oil deposit II suction pipe column 6 and is put to a set position, the top of the lower layer oil deposit I suction pipe column is connected with a suction four-way joint 15 and a bottom layer liquid outlet joint 16, the bottom of the lower layer oil deposit I suction pipe column is connected with a liquid inlet check valve 2, the suction four-way joint 15 is arranged above a jet flow four-way joint 14, and the bottom layer liquid outlet joint 16 is arranged at the top of the suction four-way joint 15; thus, a cavity formed between the jet flow suction pipe column 5 and the upper oil deposit II suction pipe column 6 is a second liquid return cavity B, and an inner cavity of the upper oil deposit II suction pipe column 6 is a first liquid return cavity C;
in addition, the ground control part construction includes:
1. a well washing liquid inlet hole d is formed in one side of the large four-way valve 12 of the wellhead, and is connected to a high-pressure injection pump 18 through a valve c and an injection pipeline 17 and is connected to a high-pressure pump liquid supply tank 21 through a valve a;
2. the outer wall of the jet flow four-way joint 14 is provided with a liquid inlet hole and is connected to a high-pressure injection pump 18 and a high-pressure pump liquid supply tank 21 through a valve d and an injection pipeline 17;
3. a liquid outlet is arranged on the outer wall of the pumping four-way joint 15, and is connected to a high-pressure pump liquid supply tank 21 through a valve e and a valve f, and is connected to an external discharge pipeline through a valve g;
4. a liquid outlet is arranged at the center of the bottom liquid outlet joint 16, and is connected to a high-pressure pump liquid supply tank 21 through a valve k, a pipeline and a valve h, and is connected to an external discharge pipeline through a valve j.
The invention relates to a using method of a petroleum stratified oil production device, namely a using method of a jet type stratified oil production device, which comprises second-layer oil production, first-layer oil production and well flushing,
1. the second layer oil recovery comprises the following processes: injecting an induced liquid into the high-pressure liquid supply tank 21, opening a valve a, supplying liquid through a high-pressure injection pump 18, setting a downhole packer, sequentially opening valves d, e, f and g, allowing the high-pressure liquid to enter a liquid inlet cavity A through the valve d, allowing the induced liquid to flow downwards along the liquid inlet cavity A and to be sprayed to a second liquid return cavity B through an upper-layer negative pressure jet hole 6.1, allowing the formed negative pressure to drive oil and water of the oil reservoir II to flow upwards along the second liquid return cavity B through the valve e, allowing one part of the oil and water to enter the high-pressure liquid supply tank 21 through the valve f, and allowing the other part of the oil and water to enter an external discharge pipeline through the valve g to form a second-layer oil extraction, and closing the valves k, h and j all the time in the process;
2. the first layer of oil production comprises the following processes: when oil extraction needs to be carried out on the oil reservoir I, a valve a is opened, liquid is supplied through a high-pressure injection pump 18, an underground packer is sealed, then valves d, k, h and j are opened in sequence, high-pressure liquid enters a liquid inlet cavity A through the valve d, drawing liquid is downward along the liquid inlet cavity A and is sprayed to a first liquid return cavity C through a lower-layer negative-pressure jet hole 7.1, a formed negative pressure opens a steel ball, oil and water liquid of the oil reservoir I is driven to pass through the valve k upwards along the first liquid return cavity C, one part of the oil and water liquid enters a high-pressure pump liquid supply box 21 through the valve h, the other part of the oil and water liquid enters an external discharge pipeline through the valve j to form a first-layer oil extraction layer, and the valves e, f and g are closed all the time;
3. the well washing process comprises the following steps:
when the liquid is thick and the underground pipe column is blocked, namely the well is required to be washed, the valves b, c and L are opened, and the well washing liquid can be specially supplied to the high-pressure injection pump 18 for well washing through the control valve b;
when the well is washed, the flow direction of the liquid is as follows: the mixture enters the annular space between a sleeve and a jet flow suction pipe column 5 through a valve b → a high-pressure injection pump 18 → a valve c, passes through a second washable well packer 10, a K344 interval packer 8 and a first washable well packer 4, and then passes through a liquid inlet check valve 2 → a lower-layer negative pressure jet hole 7.1 → a liquid inlet cavity A to realize the cleaning of the liquid inlet cavity A, and valves e, f and g and valves K, h and j are closed at the moment;
after the liquid inlet cavity A is washed, the valves e and g are opened, the valve L is closed, the second liquid return cavity B is washed, and the washing liquid is discharged through the connection of a discharge pipeline;
after the second liquid return cavity B is cleaned, the valves k and j are opened, the valves e and g are closed, the first liquid return cavity C is cleaned, and cleaning liquid is discharged through the connection of an external discharge pipeline, so that the whole cleaning of the underground pipe column is completed.
referring to the attached drawing 5, the lower liquid inlet opening valve 22 adopted by the invention comprises a floating valve 22.1, a valve body 22.2, rubber 22.3, a positioning pin 22.4, a return spring 22.5, a liquid passing channel 22.6 and a liquid supply zone 22.7, wherein the liquid supply zone 22.7 with a conical structure is arranged in an inner cavity of the lower side of the valve body 22.2, the positioning pin 22.4 and the return spring 22.5 are arranged in the middle of the liquid supply zone 22.7, the liquid passing channels 22.6 are arranged on the outer side of the liquid supply zone 22.7, the bottom of each liquid passing channel 22.6 is communicated with a cavity of the liquid supply zone 22.7, the top of each liquid passing channel is connected with the floating valve 22.1 through rubber 22.3, the floating valve 22.1 is in a conical structure, and the bottom of each floating valve is connected with the positioning pin 22.4 through the return spring 22.5.
When the oil reservoir I is exploited, a valve a is opened, liquid is supplied through a high-pressure injection pump 18, an underground packer is sealed, then valves d, k, h and j are opened in sequence, high-pressure liquid enters a liquid inlet cavity A through the valve d, induced liquid flows downwards along the liquid inlet cavity A and is sprayed to a first liquid return cavity C through a lower-layer negative-pressure jet hole 7.1, the formed negative pressure drives oil liquid of the oil reservoir I to open a lower-layer liquid inlet opening valve 22, the oil liquid passes through the valve k upwards along and then along the first liquid return cavity C, one part of the oil liquid enters a high-pressure pump liquid supply tank 21 through the valve h, the other part of the oil liquid enters an external discharge pipeline through the valve j to form a first-layer oil extraction, and the valves e, f and g are closed all the time;
wherein, the oil water liquid passes through the liquid supply area 22.7 with a conical structure, and because the floating valve 22.1 is in a conical structure, the floating valve 22.1 is opened under the driving of negative pressure formed by the lower layer negative pressure jet hole 7.1 as a nozzle, so that the oil water liquid enters the first liquid return cavity C through the plurality of liquid passing channels 22.6 and is mixed with the power liquid to be produced out of the ground; in addition, after the floating valve 22.1 is opened, the return spring 22.5 is pulled, when the suction liquid stops being sprayed, the return spring 22.5 pulls the floating valve 22.1 back again, and the plurality of liquid passing channels 22.6 are sealed through the rubber 22.3.
referring to the attached figure 4, the jet flow suction pipe column 5 and the upper layer oil deposit II suction pipe column 6 can be connected with a power injection joint 24, the power injection joint 24 comprises an upper joint 24.1, injection holes 24.2, a lower joint 24.3 and a diffusion cavity 24.4, a plurality of injection holes 24.2 are arranged between the upper joint 24.1 and the lower joint 24.3, the injection holes 24.2 are obliquely arranged from outside to inside, the diffusion cavity 24.4 is arranged in the inner cavity of the upper joint 24.1 and is provided with internal threads to facilitate connection, and external threads are arranged on the outer wall of the lower joint 24.3 to facilitate connection of the jet flow suction pipe column (5) or the upper layer oil deposit II suction pipe column (6).
During the use, upper strata negative pressure jet hole (6.1), lower floor's negative pressure jet hole (7.1) among the replacement embodiment 1 and 2 can threaded connection on efflux suction pipe post (5) and upper reservoir II suction pipe post (6), the adjustment position and the installation of being convenient for, and is more convenient during the construction.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a petroleum stratified oil production device which characterized by: comprises an oil well casing (1), a liquid inlet check valve (2), a bottom layer butt-joint device (3), a first washable well packer (4), a jet flow suction pipe column (5), an upper layer oil deposit II suction pipe column (6), a lower layer oil deposit I suction pipe column (7), a K344 interval packer (8), a flow dividing and liquid inlet flow passing device (9), a second washable well packer (10), a high-pressure injection pump (18), an injection liquid supply pipeline (19), a high-pressure pump liquid supply tank (21), a lower layer liquid inlet opening valve (22), a pipe column blocking end cover (23), a liquid inlet cavity (A), a second liquid return cavity (B), a first liquid return cavity (C), an upper layer negative pressure jet hole (6.1) and a lower layer negative pressure jet hole (7.1),
installing a jet flow suction pipe column (5) in an oil well casing pipe (1), and installing a first washable well packer (4), a second washable well packer (10) and a K344 interval packer (8) on the jet flow suction pipe column (5) so that two oil reservoirs are separated; an upper oil deposit II suction pipe column (6) is arranged in an inner cavity of a jet flow suction pipe column (5), a lower oil deposit I suction pipe column (7) is arranged in an inner cavity of the upper oil deposit II suction pipe column (6), an upper negative pressure jet hole (6.1) and a split liquid flow-through device (9) are arranged between the jet flow suction pipe column (5) and the upper oil deposit II suction pipe column (6) and at the position of the upper oil deposit II, a pipe column blocking end cover (23) is arranged between the bottom of the upper oil deposit II suction pipe column (6) and the lower oil deposit I suction pipe column (7), a liquid inlet check valve (2) is connected to the lower side of the lower oil deposit I suction pipe column (7), a lower negative pressure jet hole (7.1) is arranged between the liquid inlet check valve (2) and the lower oil deposit I suction pipe column (7), a lower liquid inlet opening valve (22) is arranged in the liquid inlet check valve (2), and a bottom butt joint device (3) is arranged at the bottom of the jet flow suction pipe column (5); a liquid inlet cavity (A) is formed between the jet flow suction pipe column (5) and the upper oil deposit II suction pipe column (6), a second liquid return cavity (B) is formed between the bottom of the upper oil deposit II suction pipe column (6) and the lower oil deposit I suction pipe column (7), and the inner cavity of the lower oil deposit I suction pipe column (7) is a first liquid return cavity (C);
the bottom layer butting connector (3) and the tubular column blocking end cover (23) connect the bottom of the liquid inlet cavity (A) to the first liquid return cavity (C) through the lower layer negative pressure jet hole (7.1); the liquid inlet cavity (A) is communicated with the second liquid return cavity (B) through an upper-layer negative pressure jet hole (6.1);
the top of the liquid inlet cavity (A) is connected to a high-pressure injection pump (18) through a valve d and is communicated to a high-pressure pump liquid supply tank (21) through an injection liquid supply pipeline (19); the upper end of the second liquid return cavity (B) is communicated to the bottom of the high-pressure pump liquid supply tank (21) and an external pipeline through a valve and a pipeline, and the top of the first liquid return cavity (C) is communicated to the high-pressure pump liquid supply tank (21) and the external pipeline through a valve and a pipeline;
reposition of redundant personnel feed liquor current-flowing ware (9) include body (9.1), check valve (9.2), cross liquid hole (9.3), centre bore (9.4), body (9.1) be the ring column structure, the center of body (9.1) is equipped with centre bore (9.4), be equipped with a plurality of check valves (9.2) in body (9.1), liquid realizes outside-in one-way flow, be equipped with a plurality of liquid holes (9.3) of crossing that link up from top to bottom on body (9.1), the reposition of redundant personnel feed liquor current-flowing ware (9) set up in upper oil deposit II department, and install in the annular space between jet-flow suction column (5) and upper oil deposit II suction column (6) of K344 interval packer (8) upside.
2. The oil zonal recovery apparatus of claim 1, wherein: the top of the oil well casing (1) is connected to a large four-way joint (12) through a casing flange plate (11), a hanger (13) is installed on the inner side of the upper portion of the large four-way joint (12), a jet flow four-way joint (14) is installed on the top of the large four-way joint (12), a suction four-way joint (15) is installed on the upper portion of the jet flow four-way joint (14), and a bottom layer liquid outlet joint (16) is installed on the top of the suction four-way joint (15).
3. The oil zonal recovery apparatus of claim 2, wherein: the outer side of the large four-way joint (12) is provided with a well washing liquid inlet hole d, a hanger (13) on the inner side of the upper part of the large four-way joint (12) is used for fixedly connecting the top end of the jet flow pumping pipe column (5), and the well washing liquid inlet hole d is connected in parallel to the high-pressure injection pump (18) and the high-pressure pump liquid supply tank (21) through an injection pipeline (17).
4. The apparatus for stratified oil recovery as claimed in claim 2, wherein: the bottom of the jet flow four-way joint (14) is fixedly connected to the top of the large four-way joint (12), the outer wall of the jet flow four-way joint (14) is provided with a liquid inlet hole and is connected to a high-pressure injection pump (18) and a high-pressure pump liquid supply tank (21) through a valve d and an injection pipeline; the top of the jet flow cross joint (14) is fixed on the top of the upper oil reservoir II suction pipe column (6).
5. The oil zonal recovery apparatus of claim 4, wherein: the bottom of the suction four-way joint (15) is fixed at the top of the jet flow four-way joint (14), the top of the suction four-way joint (15) is provided with a bottom liquid outlet joint (16), the outer wall of the suction four-way joint (15) is provided with a liquid outlet and is connected to a high-pressure pump liquid supply tank (21) through a valve e and a valve f.
6. The oil zonal recovery apparatus of claim 5, wherein: the center of the bottom layer liquid outlet joint (16) is provided with a liquid outlet, and the bottom layer liquid outlet joint is connected to a high-pressure pump liquid supply tank (21) through a valve k, a pipeline and a valve h and is connected to an external discharge pipeline through a valve j.
7. The oil zonal recovery apparatus of claim 1, wherein: and (3) opening a valve above the second liquid return cavity (B), enabling the liquid inlet cavity (A) to enter the second liquid return cavity (B) through an upper negative pressure jet hole (6.1) to form negative pressure, driving the flow dividing and liquid passing device (9) to open, bringing out oil of the upper oil reservoir II, and lifting the oil to a well head along the second liquid return cavity (B).
8. The apparatus for stratified oil recovery as claimed in claim 1, wherein: the lower layer liquid inlet opening valve (22) adopts a steel ball.
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| CN102071916A (en) * | 2009-11-25 | 2011-05-25 | 大港油田集团有限责任公司 | Oil-water separate mining string of bottom water reservoir and jet pump thereof |
| CN110107230A (en) * | 2019-05-17 | 2019-08-09 | 张强 | The layering gas recovery device of the double-deck tubing string |
| CN110242260A (en) * | 2019-05-17 | 2019-09-17 | 张强 | The application method of the layering gas recovery device of the double-deck tubing string |
| CN110778296A (en) * | 2019-10-31 | 2020-02-11 | 中国石油大学胜利学院 | Thickened oil cold production device suitable for shallow well layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8418768B2 (en) * | 2009-12-09 | 2013-04-16 | Ptt Exploration And Production Public Company Ltd. | Bypass gaslift system, apparatus, and method for producing a multiple zones well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071916A (en) * | 2009-11-25 | 2011-05-25 | 大港油田集团有限责任公司 | Oil-water separate mining string of bottom water reservoir and jet pump thereof |
| CN110107230A (en) * | 2019-05-17 | 2019-08-09 | 张强 | The layering gas recovery device of the double-deck tubing string |
| CN110242260A (en) * | 2019-05-17 | 2019-09-17 | 张强 | The application method of the layering gas recovery device of the double-deck tubing string |
| CN110778296A (en) * | 2019-10-31 | 2020-02-11 | 中国石油大学胜利学院 | Thickened oil cold production device suitable for shallow well layer |
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Effective date of registration: 20220930 Address after: 157000 Hope Home North 31, Dongdiming Street, Aimin District, Mudanjiang City, Heilongjiang Province Applicant after: MUDANJIANG JINGTIAN OIL DRILLING ACCESSORIES CO.,LTD. Address before: 257000 Shengli Oilfield Company, Dongying District, Dongying City, Shandong Province Applicant before: Song Xiaoping |
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